Porównanie systemów sterowania zapasami ze zmiennym opóźnieniem dostaw i zaburzonym zapotrzebowaniem: cyklicznego oraz z regulatorem PD i predyktorem Smitha
Comparison of Inventory Control Systems with Time-varying Delivery Delay and Disturbed Demand: a Periodic and PD Controller with Smith Predictor
Author(s): Ewelina Chołodowicz, Przemysław OrłowskiSubject(s): Business Economy / Management, ICT Information and Communications Technologies
Published by: Społeczna Akademia Nauk
Keywords: inventory control system; automated order system; time-varying inventory model; SPEA2; bicriterial optimization; inventory optimization; discrete-time systems
Summary/Abstract: In this paper, we use a mathematical model of an inventory system with time-varying delivery delay and two control systems in order to compare their properties with different variance of noise for the goods flow optimization problem in the inventory systems. Control systems structures based on mathematical discrete equations are given for optimization: a Periodic Inventory System with adaptive maximal inventory level and Proportional-derivative Inventory Control System with Smith predictor and adaptive reference stock proposed by the authors in previous works. Parameters were selected for each of the control system structures through solving bictriterial optimization task for a specific scenario of variable market demand using SPEA2 in Matlab/Simulink. In this article, we mainly highlight which control structure reaches better performance taking account probabilistic disturbance in market demand.
Journal: Przedsiębiorczość i Zarządzanie
- Issue Year: 17/2016
- Issue No: 12.2
- Page Range: 67-90
- Page Count: 24
- Language: Polish